OCULUS Pentacam Interpretation Guide

17
The left eye (Figure 10) indicates an inferior steepening, but a smooth anterior elevation map.
The reason for the thinning in the pachymetry map is the posterior elevation map, where there
are significant elevations of more than 30 μm. Note that the position of the thinning in the
pachymetry map and the highest spot on the elevation map are exactly at the same position.
This is an excellent example to document that topography or anterior elevation only does not
indicate keratoconus.
Figure 10: 4 Maps Selectable showing significant elevation in OS
significant elevation
5 Differences between Placido and
elevation-derived curvature maps

OCULUS Pentacam Specifications

General

Measurement Time	Less than 2 seconds
Corneal Coverage	Up to 12 mm
Software	Pentacam Software
Data Transfer	USB
Corneal Topography	Yes
Display	External monitor required
Measurement Principle	Scheimpflug imaging
Camera	Rotating Scheimpflug camera
Light Source	Blue LED
Pachymetry	Yes
Anterior Chamber Analysis	Yes
Imaging Principle	Scheimpflug imaging
Fixation	Internal
Power Supply	100-240 V, 50/60 Hz
Resolution	High resolution
Lens Density Measurement	Yes
Dimensions	Varies depending on model and configuration
Weight	Varies by model, check manufacturer specifications
Number of Images	25 or 50